Northeast Research and Demonstration Farm
Authors: Kenneth T. Pecinovsky (Iowa State University) , Brian J. Lang (Iowa State University)
Soil pH is one of the most important soil characteristics of crop production. The pH is the negative logarithm of the hydrogen ion activity of a soil. For each unit increase in pH, there is a 10 times change in acidity. A pH of 5 is 10 times more acid than a pH of 6, and 100 times more acid than a pH of 7. A soil pH greater than 7 is called alkaline or basic. A soil pH less than 7 is called acidic.
How to Cite: Pecinovsky, K. T. & Lang, B. J. (2015) “Crop and Soil Responses to Rates of Lime”, Iowa State University Research and Demonstration Farms Progress Reports. 2014(1).